Question

我使用Django（1.8.4）和postgress，我的makemigrations有问题。它会随机生成新的迁移，并且这些迁移包含已在我的数据库中应用的更改。

我的模特：

   class GalleryType(models.Model):
        name = models.CharField(max_length=250)
        description = models.TextField()
        slug = models.CharField(max_length=250)
        fecha_creacion = models.DateTimeField(editable=False)
        fecha_modificacion = models.DateTimeField(editable=False)
        active = models.BooleanField(default=True)

    class GalleryExtended(models.Model):
        # Link back to Photologue's Gallery model.
        gallery = models.OneToOneField(Gallery, related_name='extended')
        order = models.IntegerField(default=0)
        type = models.ForeignKey(to='GalleryType', related_name='gallerytype',        default=DEFAUTL_GALLERY_TYPE_ID)
        lugar_evento = models.CharField(max_length=150, null=True, blank=True, default=None)
        active = models.BooleanField(default=True)

当我运行＆＃34; python manage.py makemigrations＆＃34; 我用

进行迁移

migrations.AlterField(
    model_name='galleryextended',
    name='type',
    field=models.ForeignKey(default=1, to='photogallery.GalleryType', related_name='gallerytype'),
),

但是这个更改已经在我的数据库中提供了!!

CREATE TABLE photogallery_galleryextended
(
  id serial NOT NULL,
  "order" integer NOT NULL,
  gallery_id integer NOT NULL,
  type_id integer NOT NULL,
  lugar_evento character varying(150),
  CONSTRAINT photogallery_galleryextended_pkey PRIMARY KEY (id),
  CONSTRAINT photoga_type_id_64931acb553c985b_fk_photogallery_gallerytype_id FOREIGN KEY (type_id)
      REFERENCES photogallery_gallerytype (id) MATCH SIMPLE
      ON UPDATE NO ACTION ON DELETE NO ACTION DEFERRABLE INITIALLY DEFERRED,
  CONSTRAINT photogalle_gallery_id_4fb0cbc52e5218b7_fk_photologue_gallery_id FOREIGN KEY (gallery_id)
      REFERENCES photologue_gallery (id) MATCH SIMPLE
      ON UPDATE NO ACTION ON DELETE NO ACTION DEFERRABLE INITIALLY DEFERRED,
  CONSTRAINT photogallery_galleryextended_gallery_id_key UNIQUE (gallery_id)
)
WITH (
  OIDS=FALSE
);
ALTER TABLE photogallery_galleryextended
  OWNER TO myuser;

如果我再次运行命令python manage.py makemigrations：

************************************************************************
********* 2015-10-15 17:53:04 RUN AT : local **** Site:1 *********
No changes detected

如果我再次运行它而不改变任何东西：

************************************************************************
********* 2015-10-15 17:53:18 RUN AT : local **** Site:1 *********
Migrations for 'photogallery':
  0022_auto_20151015_1753.py:
    - Alter field type on galleryextended

新迁移0022_auto_20151015_1753.py包含：

class Migration(migrations.Migration):

    dependencies = [
        ('photogallery', '0021_auto_20151015_1748'),
    ]

    operations = [
        migrations.AlterField(
            model_name='galleryextended',
            name='type',
            field=models.ForeignKey(default=1, to='photogallery.GalleryType',
            related_name='gallerytype'),
        ),
    ]

如果我继续重新考虑＆＃34; python manage.py makemigrations＆＃34;命令我得到更多的迁移，唯一改变的是ForeignKey元素的顺序

operations = [
    migrations.AlterField(
        model_name='galleryextended',
        name='type',
        field=models.ForeignKey(to='photogallery.GalleryType', related_name='gallerytype', default=1),
    ),
]
operations = [
    migrations.AlterField(
        model_name='galleryextended',
        name='type',
        field=models.ForeignKey(to='photogallery.GalleryType', default=1, related_name='gallerytype'),
    ),
]
operations = [
    migrations.AlterField(
        model_name='galleryextended',
        name='type',
        field=models.ForeignKey(related_name='gallerytype', default=1, to='photogallery.GalleryType'),
    ),
]

相关：

Django 1.8 creates migration but nothing has changed

嗨，谢谢你的回复，我试过了

>>> from apps.photogallery.models import GalleryExtended
>>> GalleryExtended._meta.get_field('type').deconstruct()
('type', 'django.db.models.ForeignKey', [], {'related_name': 'gallerytype', 'default': 1, 'to': 'photogallery.GalleryType'})
>>> GalleryExtended._meta.get_field('type').deconstruct()
('type', 'django.db.models.ForeignKey', [], {'related_name': 'gallerytype', 'default': 1, 'to': 'photogallery.GalleryType'})
>>> GalleryExtended._meta.get_field('type').deconstruct()
('type', 'django.db.models.ForeignKey', [], {'related_name': 'gallerytype', 'default': 1, 'to': 'photogallery.GalleryType'})
>>> GalleryExtended._meta.get_field('type').deconstruct()
('type', 'django.db.models.ForeignKey', [], {'related_name': 'gallerytype', 'default': 1, 'to': 'photogallery.GalleryType'})

>>> from django.db.migrations.autodetector import MigrationAutodetector
>>> ma = MigrationAutodetector(None,None) ;
>>> ma.deep_deconstruct(GalleryExtended._meta.get_field('type'))
('django.db.models.ForeignKey', [], {'related_name': 'gallerytype', 'default': 1, 'to': 'photogallery.GalleryType'})
>>>

但是当我退出shell并制造数据时，它会继续产生这些不必要的错误

Django 1.8 makemigration生成新的迁移，而模型中没有任何变化

0 个答案: